CaratHunter
Plans
Marquise|Lab Grown|IGI

1.51ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG812620850

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812620850

Diamond specifications and retailer prices

From $1,200 NZD
$675 USD
As of November 1, 2026
Save $4,597 NZD (79%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $5,796 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG812620850 or 812620850. Listed at 23 retailers as of October 29, 2026, with prices from $1,200 to $5,796, a $4,597 spread on the same certified stone. MOH London lists it at $5,796. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812620850
Dimensions11.80 × 6.03 × 3.64 mm
L/W Ratio1.96
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.80 mm6.03 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812620850
Side View
Table 61.0%Crown 34.3°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $5,796 NZD|Low: $1,049 NZD|High: $5,952 NZD|Avg: $2,978 NZD|+4.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 8$1,093 NZD
Retailer 4$1,200 NZD
Retailer 9$1,354 NZD
Retailer 10$1,354 NZD
Retailer 14$1,520 NZD
Retailer 17$1,870 NZD
Retailer 19$1,991 NZD
Retailer 6$2,057 NZD
Retailer 12$2,061 NZD
Retailer 2$2,283 NZD
Retailer 15$2,849 NZD
Retailer 16$3,094 NZD
Retailer 11$3,955 NZD
Retailer 3$4,031 NZD
Retailer 5$4,295 NZD
Retailer 7$4,310 NZD
Retailer 18$4,405 NZD
Retailer 13$4,834 NZD
MOH London$5,796 NZD

37 data points across 19 retailers

23 retailers$1,200 NZD to $5,796 NZD

Retailer 1
-
$1,093 NZD
$615 USD
Price last confirmed 25 days ago
A
Retailer 2
-
$1,200 NZD
$675 USD
View
Final sale: no returns
Retailer 3
-
$1,223 NZD
$688 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$1,280 NZD
$720 USD
View
Price last confirmed 38 days ago
Retailer 5
-
$1,354 NZD
$762 USD
View
Price last confirmed 30 days ago
Retailer 6
-
$1,354 NZD
$762 USD
View
Price last confirmed 21 days ago
A
Retailer 7
-
$1,520 NZD
$855 USD
View
A
Retailer 8
-
$1,870 NZD
$1,052 USD
View
A
Retailer 9
-
$1,991 NZD
$1,120 USD
View
Retailer 10
-
$2,057 NZD
€1,102 EUR
View
Price last confirmed 8 days ago
A
Retailer 11
-
$2,061 NZD
£913 GBP
View
A
Retailer 12
-
$2,283 NZD
ZAR 20,749 ZAR
View
A
Retailer 13
-
$2,849 NZD
$1,603 USD
View
B+
Retailer 14
-
$3,094 NZD
A$2,678 AUD
View
Retailer 15
-
$3,199 NZD
$1,800 USD
View
Price last confirmed 9 days ago
Retailer 16
-
$3,563 NZD
$2,005 USD
View
Price last confirmed 33 days ago
Retailer 17
-
$3,955 NZD
£1,752 GBP
View
Price last confirmed 22 days ago
B+
Retailer 18
-
$4,031 NZD
$2,268 USD
View
B+
Retailer 19
-
$4,295 NZD
$2,416 USD
View
B+
Retailer 20
-
$4,310 NZD
$2,425 USD
View
B+
Retailer 21
-
$4,405 NZD
$2,478 USD
View
B+
Retailer 22
-
$4,834 NZD
$2,720 USD
View
Most Expensive
B
MOH London
LG812620850 · Oct 29
$5,796 NZD
£2,568 GBP
View
22 more retailers have this diamond
Prices start from $1,200 NZDSave up to $4,597 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Marquise
$1,200 NZD